Board: Intel SA1100 (Brutus)
CPU : StrongARM 221.2 MHz
Microseconds for one run through Dhrystone: 3.3
Dhrystones per Second: 306748.5
VAX MIPS rating = 174.586
Startup, main stack : stack used 404 size 2400
Startup : Interrupt stack used 136 size 4096
Startup : Idlethread stack used 87 size 2048
eCos Kernel Timings
Notes: all times are in microseconds (.000001) unless otherwise stated
Reading the hardware clock takes 0 `ticks' overhead
... this value will be factored out of all other measurements
Clock interrupt took 3.09 microseconds (11 raw clock ticks)
Testing parameters:
Clock samples: 32
Threads: 64
Thread switches: 128
Mutexes: 32
Mailboxes: 32
Semaphores: 32
Scheduler operations: 128
Counters: 32
Alarms: 32
Confidence
Ave Min Max Var Ave Min Function
====== ====== ====== ====== ========== ========
6.63 5.43 18.99 0.77 70% 37% Create thread
0.83 0.81 2.17 0.04 98% 98% Yield thread [all suspended]
1.27 0.81 5.15 0.30 68% 73% Suspend [suspended] thread
1.25 0.81 5.15 0.25 82% 1% Resume thread
1.52 1.09 7.87 0.30 78% 75% Set priority
0.97 0.54 2.71 0.28 64% 51% Get priority
3.45 2.71 19.53 0.66 84% 76% Kill [suspended] thread
0.90 0.81 6.24 0.17 98% 98% Yield [no other] thread
1.86 1.36 6.24 0.33 68% 50% Resume [suspended low prio] thread
1.25 0.81 5.15 0.25 82% 1% Resume [runnable low prio] thread
2.01 1.63 10.04 0.32 70% 84% Suspend [runnable] thread
0.90 0.81 6.24 0.17 98% 98% Yield [only low prio] thread
1.25 0.81 5.15 0.24 84% 1% Suspend [runnable->not runnable]
2.92 1.90 18.72 0.57 85% 43% Kill [runnable] thread
2.45 1.90 10.31 0.33 95% 54% Destroy [dead] thread
3.95 2.71 23.60 0.89 68% 54% Destroy [runnable] thread
8.55 6.24 19.53 1.15 60% 23% Resume [high priority] thread
1.85 1.63 11.94 0.21 49% 49% Thread switch
0.25 0.00 1.63 0.05 89% 10% Scheduler lock
0.52 0.27 1.90 0.07 85% 13% Scheduler unlock [0 threads]
0.51 0.27 1.36 0.06 85% 13% Scheduler unlock [1 suspended]
0.51 0.27 1.36 0.06 85% 13% Scheduler unlock [many suspended]
0.51 0.27 1.63 0.06 85% 13% Scheduler unlock [many low prio]
0.58 0.27 3.53 0.20 71% 21% Init mutex
1.07 0.54 5.70 0.35 87% 59% Lock [unlocked] mutex
1.14 0.81 6.51 0.40 96% 81% Unlock [locked] mutex
0.96 0.54 5.15 0.34 68% 65% Trylock [unlocked] mutex
0.94 0.54 4.88 0.34 65% 65% Trylock [locked] mutex
0.33 0.27 2.17 0.11 96% 96% Destroy mutex
4.21 3.80 10.85 0.41 71% 96% Unlock/Lock mutex
0.76 0.54 4.07 0.25 96% 56% Create mbox
0.75 0.54 1.90 0.20 84% 50% Peek [empty] mbox
1.56 1.09 6.78 0.39 68% 59% Put [first] mbox
0.75 0.54 1.90 0.20 84% 50% Peek [1 msg] mbox
1.55 1.09 6.78 0.40 68% 62% Put [second] mbox
0.77 0.54 1.63 0.17 46% 37% Peek [2 msgs] mbox
1.67 1.09 6.24 0.31 87% 34% Get [first] mbox
1.63 1.09 6.24 0.31 75% 34% Get [second] mbox
1.50 1.09 6.51 0.40 56% 62% Tryput [first] mbox
1.58 1.09 5.43 0.37 68% 53% Peek item [non-empty] mbox
1.79 1.09 7.05 0.43 71% 25% Tryget [non-empty] mbox
1.29 1.09 5.15 0.32 87% 87% Peek item [empty] mbox
1.33 1.09 5.97 0.37 96% 84% Tryget [empty] mbox
0.73 0.54 1.90 0.21 84% 56% Waiting to get mbox
0.76 0.54 1.90 0.19 40% 43% Waiting to put mbox
1.47 1.09 6.78 0.39 59% 84% Delete mbox
2.70 2.17 12.75 0.63 96% 96% Put/Get mbox
0.47 0.27 2.71 0.20 96% 50% Init semaphore
0.89 0.54 4.88 0.33 56% 75% Post [0] semaphore
0.96 0.54 5.15 0.33 71% 75% Wait [1] semaphore
0.86 0.54 4.88 0.32 96% 81% Trywait [0] semaphore
0.69 0.54 3.26 0.22 96% 75% Trywait [1] semaphore
0.49 0.27 3.26 0.28 84% 84% Peek semaphore
0.39 0.27 2.44 0.19 96% 78% Destroy semaphore
2.83 2.44 11.66 0.55 96% 96% Post/Wait semaphore
0.52 0.27 3.26 0.20 56% 40% Create counter
0.59 0.00 2.71 0.34 81% 46% Get counter value
0.36 0.00 2.44 0.21 81% 9% Set counter value
1.13 0.81 2.98 0.26 59% 37% Tick counter
0.39 0.27 1.90 0.19 90% 78% Delete counter
0.86 0.54 4.07 0.24 65% 31% Create alarm
1.86 1.36 9.77 0.54 96% 90% Initialize alarm
0.77 0.54 2.71 0.23 84% 50% Disable alarm
1.86 1.36 9.22 0.51 96% 75% Enable alarm
0.89 0.54 3.26 0.25 65% 21% Delete alarm
0.99 0.81 3.26 0.21 96% 59% Tick counter [1 alarm]
4.22 4.07 6.78 0.22 96% 71% Tick counter [many alarms]
1.51 1.36 4.61 0.24 96% 78% Tick & fire counter [1 alarm]
20.29 20.07 23.33 0.23 96% 53% Tick & fire counters [>1 together]
4.71 4.61 7.87 0.20 96% 96% Tick & fire counters [>1 separately]
2.88 2.71 23.87 0.33 99% 99% Alarm latency [0 threads]
3.24 2.71 17.36 0.40 79% 58% Alarm latency [2 threads]
15.71 12.48 27.40 1.47 53% 17% Alarm latency [many threads]
5.95 5.43 64.56 1.02 97% 97% Alarm -> thread resume latency
3.25 0.81 14.11 0.00 Clock/interrupt latency
2.68 1.09 12.75 0.00 Clock DSR latency
29 0 316 (main stack: 764) Thread stack used (1120 total)
All done, main stack : stack used 764 size 2400
All done : Interrupt stack used 288 size 4096
All done : Idlethread stack used 260 size 2048
Timing complete - 30280 ms total
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